Abstract: A relay with an intermediate alert mechanism and a method for producing an intermediate alert in association with a relay. The relay comprises an input sampling module configured to detect a parameter of a source to be monitored; a processing module configured to determine a working range based on a threshold level and a working condition, and the processing module further configured to automatically determine at least one intermediate level within the working range based on the threshold level. The processing module causes the transmission of an intermediate trigger signal when the detected value of the parameter reaches the intermediate level.

Abstract: The design of a functional measuring group for a medium-voltage substation has been optimized to make the product compact and robust in terms of internal arc, and also to favour complete accessibility to the measurement sensors. In particular, the voltage sensors are located in a vertical plane directly accessible via the front panel of the group, and the current sensors are located in the rear housing of the group, being directly accessible via the top of the group. In addition to being placed in an insulated compartment, the voltage sensors are insulated and shielded, and their connection terminals are designed for connection by cable with a flat interface.

Abstract: The invention relates to a parallelepipedal framework (1) of an electrical panel or enclosure comprising: a first rectangular base (b1) and a second rectangular base (b2) each formed by four rails (10, 11), four lateral rails (12, 13, 14, 15) perpendicular to the bases and connecting the two bases together, forming four lateral faces (f1, f2, f3, f4) parallel in twos, two first parallel lateral faces (f1, f3) each comprising an oblique rail (16, 17) fastened along a diagonal of the said face, the four lateral rails (12, 13, 14, 15) and the two oblique rails (16, 17) comprising fastening ends articulated on each of the two bases (b1, b2) arranged to cause the said oblique rails (16, 17) and lateral rails (12, 13, 14, 15) to pivot on two planes formed by the said first lateral faces (f1, f3) so as to be able to manoeuvre the framework between a folded position and an unfolded position.

Abstract: The invention relates to a method for electing the item of active master equipment from two redundant primary and secondary master items of equipment (10, 20), the said primary and secondary master items of equipment (10, 20) being directly connected to a fieldbus (1) and linked together by a terminal cable (30) and each having an active operating mode and a standby mode. According to the invention, each of the said primary and secondary master items of equipment (10, 20) also has one and the same state machine (12, 22) comprising means for designating one of the said primary and secondary master items of equipment (10, 20) as the active master item of equipment, and the terminal cable (30) comprises intrinsic means for establishing a directional relation of the primary master item of equipment (10, 20) to the secondary master item of equipment (10, 20).

Abstract: A system for managing time-stamped events with uncertain events-sequence signalling, including a list of variables of which a change of value must lead to the detection of an event to be time-stamped and to be saved; means, for each variable, for positioning a marker indicating the quality of the time-stamping of said event; a buffer for the storage, before they are read by client software, of said events to be time-stamped and to be saved, associated respectively with a time-stamping time, said time-stamped events read by the client software being erased from the buffer; means for enabling and for disabling means for saving in a history the values of the variables corresponding to said time-stamped events that have been read.

Abstract: The present invention relates to a device D for controlling the poles of an electric protective apparatus capable of driving a shaft (1), called the first shaft, for supporting the movable contacts between an open position of the pole in which the movable contacts and the fixed contacts of the apparatus are separated and a closed position of the pole in which these movable and fixed contacts are closed, the said device D comprising a closure spring (2) controlled by an operating shaft (3), called the second shaft, the said spring (2) being capable of transmitting closure energy to the said shaft called the first shaft (1) after compression and passing of the said spring (2) beyond a neutral point line of passage, by means of a cam (8) rotated by the said shaft called the second shaft (3), and interacting with a roller (5) secured to the shaft called the first shaft (1), means (13) for holding the control shaft called the first shaft in the closed position, and means (18, 5) for unlocking the aforementioned ho

Abstract: A structure on a bearing surface supporting the main portion of an apparatus for electrical control or protection in a medium-voltage electrical cell. It has two sides substantially parallel to one another, each side having a main portion from which extends a wing, the two wings connected to one another at their free ends with two upper crossmembers connected to the main portion of the sides by, the wings at their junctions with the main portions each having an opening to receive slidingly the two of the upper crossmembers, and first abutment and locking means, to prevent movement of the crossmember relative to the structure in five of six degrees of freedom, displacement of the crossmember in translation in a direction opposite to the direction of insertion of the crossmembers being the sixth degree of freedom, installation of the crossmember in the openings without the use of fastening means being sufficient to make the assembly stable.

Abstract: A method for evaluating the temperature of a contactor comprising a processing unit designed to act on control means of the voltage applied to an actuating coil. Measuring means measure an electric current flowing in said at least one actuating coil. The method consists in: sending a closing order consisting in applying a voltage to the terminals of the actuating coil enabling the electric current flowing in the coil to be modified up to a first reference value; sending a drop-out order consisting in fixing a voltage called drop-out voltage at the terminals of the actuating coil; measuring the electric current flowing in said actuating coil; performing acquisition of specific values on a signal of the electric current; analyzing specific values for evaluation of the operating temperature of the actuating coil.

Abstract: This electric switching system comprises first, second and third input terminals, a first, a second and a third output terminal, an electric switching module and a control module for controlling the switching module. The electric switching module comprises two first switches and two second switches, each switch comprising a fixed input contact, a fixed output contact and a mobile contact, the two fixed contacts being connected via the mobile contact in closed position of the switch and insulated from each other in open position of the switch, and a holder member holding the mobile contacts and being able to be moved by an electric driving device between a first position and a second position, the holder member comprising a first mechanical coupling element with the driving device in a primary configuration of the driving device relative to the switching module.

Abstract: A method for evaluating the mechanical performances of a switchgear apparatus comprising at least one pole having: a pair of contacts; a drive mechanism of a support arm of a first contact comprising: a rotary pole shaft and at least one connecting rod which connect the drive mechanism to the support arm, an energy storage system designed to cause movement of said arm to close the contacts. The method consists in measuring the angle of rotation of the pole shaft during closing of the contacts; reconstituting at least two specific values from the measurements and comparing them with an operating reference to diagnose the mechanical wear performances of the drive mechanism according to a comparative state.

Abstract: A method for diagnosing an operating state of a contractor, which contractor includes a processing unit for acting on a voltage control means, an actuating coil, means for measuring an electric characteristic of the actuating coil, a free wheel diode connected in parallel the actuating coil, and the means for measuring, the method including sending a drop-out order by applying a drop-out voltage at the terminals of the actuating coil, measuring an electric characteristic if the actuating coil during a period wherein a drop-out voltage is applied, reconstituting a specific value of the measured electric characteristic, comparing such a specific value with a specific initial operation reference value of the contactor; and diagnosing the state of wear of the contactor; and diagnosing the state of wear of the contactor as a function of the specific value with respect to the initial operation reference value.

Abstract: In this device, a mechanism for receiving an input mechanical command and for actuating first and second switches comprises a lever having a first side arm tiltable about a swiveling axis of said lever and a second side arm tiltable about the same swiveling axis. The first side arm and the second side arm are respectively arranged on a first side and a second side opposite relative to said swiveling axis. The first side arm is an operating arm for operating the first switch. The second side arm is an operating arm for operating the second switch.